Does anyone know if the final drive in the CVT must use original Audi oil or any 75w-90w grade will work? Which brand and grade have you guys used that worked best with your cars?

Has anyone changed the seals on their final drive as mine seems to have a leak. I checked ETKA and it seems to have two seals on the LHS shaft were my leak is. Is this seal replacement job easy or requires dropping front sub frame?

Thanks

J